Advanced spatially hybrid fluid‐kinetic modelling of plasma‐edge neutrals and application to <scp>ITER</scp> case using <scp>SOLPS‐ITER</scp>

A spatially hybrid fluid-kinetic approach for the efficient simulation of plasma-edge neutrals is extended with a kinetic-fluid condensation process and an automated to select fluid or kinetic treatment at each point along divertor targets. With proposed methods, dominant charge–exchange reaction can be largely removed from neutral simulation. The methods achieve quantitative agreement standard approach, relative errors on peak target plasma density ion flux 5–30%, while Central Processing Unit (CPU) time solver reduced by factor 3–6.